prod6
...

Apr 11 10:45:28 itv-usvr-02 sshd[13168]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.246.124.36  user=root
Apr 11 10:51:20 itv-usvr-02 sshd[13329]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.246.124.36  user=root
Apr 11 10:55:09 itv-usvr-02 sshd[13413]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.246.124.36  user=root

$f2bV_matches

Port probing on unauthorized port 23

Apr 11 05:56:59 DAAP sshd[12248]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.107.244.124  user=root
Apr 11 05:57:01 DAAP sshd[12248]: Failed password for root from 113.107.244.124 port 57336 ssh2
Apr 11 06:00:39 DAAP sshd[12314]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.107.244.124  user=root
Apr 11 06:00:41 DAAP sshd[12314]: Failed password for root from 113.107.244.124 port 50482 ssh2
Apr 11 06:04:22 DAAP sshd[12374]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.107.244.124  user=root
Apr 11 06:04:25 DAAP sshd[12374]: Failed password for root from 113.107.244.124 port 43620 ssh2
...

Apr 11 04:29:25 marvibiene sshd[62152]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.35.90.128  user=root
Apr 11 04:29:27 marvibiene sshd[62152]: Failed password for root from 112.35.90.128 port 59848 ssh2
Apr 11 04:33:42 marvibiene sshd[62250]: Invalid user oladapo from 112.35.90.128 port 49700
...

Apr 11 05:48:36 legacy sshd[29546]: Failed password for root from 54.37.159.12 port 37602 ssh2
Apr 11 05:52:21 legacy sshd[29678]: Failed password for root from 54.37.159.12 port 44774 ssh2
Apr 11 05:55:58 legacy sshd[29801]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.159.12
...

2020-04-11T04:25:55.241979shield sshd\[12861\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=212.64.28.77  user=root
2020-04-11T04:25:56.961793shield sshd\[12861\]: Failed password for root from 212.64.28.77 port 34214 ssh2
2020-04-11T04:28:24.097953shield sshd\[13153\]: Invalid user admin from 212.64.28.77 port 33656
2020-04-11T04:28:24.103432shield sshd\[13153\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=212.64.28.77
2020-04-11T04:28:26.611202shield sshd\[13153\]: Failed password for invalid user admin from 212.64.28.77 port 33656 ssh2

Apr 11 06:01:35 vps sshd[212577]: Failed password for invalid user brady from 101.255.81.91 port 54670 ssh2
Apr 11 06:04:31 vps sshd[227171]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=101.255.81.91  user=root
Apr 11 06:04:33 vps sshd[227171]: Failed password for root from 101.255.81.91 port 41024 ssh2
Apr 11 06:07:18 vps sshd[244974]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=101.255.81.91  user=root
Apr 11 06:07:20 vps sshd[244974]: Failed password for root from 101.255.81.91 port 54572 ssh2
...

[2020-04-11 00:19:08] NOTICE[12114] chan_sip.c: Registration from '' failed for '195.154.28.136:59193' - Wrong password
[2020-04-11 00:19:08] SECURITY[12128] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-04-11T00:19:08.479-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="442",SessionID="0x7f020c13daa8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/195.154.28.136/59193",Challenge="0e080549",ReceivedChallenge="0e080549",ReceivedHash="87ae58abe8fde92344992f97d20e97bf"
[2020-04-11 00:20:55] NOTICE[12114] chan_sip.c: Registration from '' failed for '195.154.28.136:59067' - Wrong password
[2020-04-11 00:20:55] SECURITY[12128] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-04-11T00:20:55.736-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="445",SessionID="0x7f020c088288",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/195.154.28
...

Apr 11 02:00:03 firewall sshd[29323]: Failed password for root from 124.152.118.131 port 2304 ssh2
Apr 11 02:02:54 firewall sshd[29453]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.152.118.131  user=root
Apr 11 02:02:57 firewall sshd[29453]: Failed password for root from 124.152.118.131 port 2305 ssh2
...

Apr 11 04:33:16 IngegnereFirenze sshd[4302]: User www-data from 202.168.205.181 not allowed because not listed in AllowUsers
...

(sshd) Failed SSH login from 222.186.15.62 (CN/China/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Apr 11 06:47:00 amsweb01 sshd[24892]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.15.62  user=root
Apr 11 06:47:01 amsweb01 sshd[24892]: Failed password for root from 222.186.15.62 port 34975 ssh2
Apr 11 06:47:04 amsweb01 sshd[24892]: Failed password for root from 222.186.15.62 port 34975 ssh2
Apr 11 06:47:06 amsweb01 sshd[24892]: Failed password for root from 222.186.15.62 port 34975 ssh2
Apr 11 07:03:47 amsweb01 sshd[26687]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.15.62  user=root

Apr 11 06:09:16 eventyay sshd[31888]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.112.228.153
Apr 11 06:09:18 eventyay sshd[31888]: Failed password for invalid user web1 from 189.112.228.153 port 39894 ssh2
Apr 11 06:14:00 eventyay sshd[32057]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.112.228.153
...

Apr 11 05:51:14 vpn01 sshd[469]: Failed password for root from 103.3.226.166 port 35518 ssh2
...